System.Windows.Data.ListCollectionView.CommitNew C# (CSharp) Method

		public override void CommitNew ()
		{
			if (IsEditingItem)
				throw new InvalidOperationException ("Cannot CommitNew while editing an item");
			if (IsAddingNew) {
				if (CurrentAddItem is IEditableObject)
					((IEditableObject) CurrentAddItem).EndEdit ();

				RootGroup.RemoveItem (CurrentAddItem);
				if (Filter != null && !Filter (CurrentAddItem)) {
					RemoveFromSourceCollection (SourceCollection.IndexOf (CurrentAddItem));
				} else {
					// When adding a new item, we initially put it in the root group. Once it's committed
					// we need to place it in the correct subtree group.
					if (Grouping) {
						RootGroup.AddInSubtree (CurrentAddItem, Culture, GroupDescriptions);
					}

					// The item was not filtered out of the tree. Do we need to resort it?
					if (SortDescriptions.Count > 0) {
						// The newly added item is at the end of the array. If we're sorting, we may have to move it.
						// Use a binary search to figure out where the item should be in the list and put it in there.
						int actualIndex = filteredList.IndexOf (CurrentAddItem);
						int sortedIndex = filteredList.BinarySearch (0, filteredList.Count - 1, CurrentAddItem, new PropertyComparer (SortDescriptions));
						if (sortedIndex < 0)
							sortedIndex = ~sortedIndex;

						if (actualIndex != sortedIndex) {
							filteredList.RemoveAt (actualIndex);
							filteredList.Insert (sortedIndex, CurrentAddItem);
							RaiseCollectionChanged (new NotifyCollectionChangedEventArgs (NotifyCollectionChangedAction.Remove, CurrentAddItem, actualIndex));
							RaiseCollectionChanged (new NotifyCollectionChangedEventArgs (NotifyCollectionChangedAction.Add, CurrentAddItem, sortedIndex));
							if (CurrentAddItem == CurrentItem)
								UpdateCurrentPositionAndItem (sortedIndex, CurrentAddItem);
						}
					}
				}
				CurrentAddItem = null;
				IsAddingNew = false;
				UpdateCanAddNewAndRemove ();
			}
		}